Keyphrases
- wireless sensor networks
- worst case
- energy consumption
- data gathering
- network lifetime
- case study
- energy efficiency
- maximum lifetime
- routing algorithm
- sensor nodes
- upper bound
- energy efficient
- sensor networks
- cluster head
- average case
- space complexity
- residual energy
- lower bound
- greedy algorithm
- estimation algorithm
- np hard
- data aggregation
- resource constrained
- estimation accuracy
- robust estimation
- approximation algorithms
- density estimation
- base station
- test bed
- multi hop
- wireless communication
- error bounds
- estimation process
- end to end
- energy aware
- reduce the energy consumption
- biological inspired
- special case